Family name จรัง (Chang 
, จรัง 
) , all over the world, is a prevalent cognomen. The family name จรัง is characteristic of Marshall Islands, where it is a widespread surname, Macao, and Taiwan, where it is a common surname (explore the name in all countries). In absolute terms, it is the most numerous in China, Taiwan, and the United States. Very seldom, จรัง is the forename as well as the last name.